Abstract
As a fundamental step for the study of extinction and generation of bubble nucleas in boiling and cavitation, a theoretical and experimental study was made on extinction behaviors of gas bubble by making use of the droplet system containing gas bubble. The small gas bubble in the droplet, whose diameter decreases with the rise of pressure, is found to extinguish when it reaches a certain critical pressure at a certain finite bubble diameter. The phenomenon is analysed from a thermodynamical instability by considering the dissolution of gas into liquid. It is made clear that there holds a fairly good agreement between the theoretical prediction and experimental results with regard to the critical pressure and bubble radius.
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